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    universaldevtools.in

    All free online developer tools

    74 tools for encoding, formatting, converting, hashing and generating test data. Each one runs in your browser, needs no account, and does not upload what you paste.

    Generators

    Generate random data, passwords, UUIDs, and more

    8 tools

    Password GeneratorGenerate secure, random passwords with customizable length and character setsUUID GeneratorGenerate UUIDs (v1, v4, v7) for unique identifiersRandom Number GeneratorGenerate random numbers within a specified rangeLorem Ipsum GeneratorGenerate placeholder text for design and developmentColor Palette GeneratorGenerate beautiful color palettes for your designsQR Code GeneratorCreate QR codes from text, URLs, or dataAPI Key GeneratorGenerate secure API keys and tokens for your applicationsPassphrase GeneratorGenerate memorable word-based passphrases

    Mock Data

    Generate realistic test data for development

    11 tools

    Fake Name GeneratorGenerate realistic fake names for testingEmail GeneratorGenerate random email addresses for testingAddress GeneratorGenerate realistic fake addresses worldwidePhone Number GeneratorGenerate random phone numbers in various formatsCredit Card GeneratorGenerate valid test credit card numbers (Luhn algorithm)IP Address GeneratorGenerate random IPv4 and IPv6 addressesMAC Address GeneratorGenerate random MAC addresses for network testingUsername GeneratorGenerate unique usernames for accounts and profilesCompany Name GeneratorGenerate creative business and company namesDate & Time GeneratorGenerate random dates and timestampsGPS Coordinates GeneratorGenerate random latitude and longitude coordinates

    Text & String

    Text manipulation and string generation tools

    8 tools

    Random String GeneratorGenerate random alphanumeric strings of any lengthWord & Character CounterCount words, characters, sentences, and paragraphsText Diff CheckerCompare two texts and highlight differencesText ReverserReverse text, words, or sentencesDuplicate Line RemoverRemove duplicate lines from textText Line SorterSort lines alphabetically or numericallyEmoji PickerBrowse and copy emojis with searchSlug GeneratorConvert text to URL-friendly slugs

    Encoders & Decoders

    Encode and decode data in various formats

    10 tools

    Base64 Encoder/DecoderEncode and decode text to/from Base64 formatURL Encoder/DecoderEncode and decode URLs and query stringsHTML Entity EncoderEncode and decode HTML entitiesJWT DecoderDecode and inspect JSON Web TokensUnicode ConverterConvert between Unicode, UTF-8, and hex representationsMorse Code TranslatorConvert text to Morse code and backROT13 EncoderEncode and decode text using ROT13 cipherBinary to TextConvert binary to text and text to binaryHex to TextConvert hexadecimal to text and backUULE GeneratorEncode and decode Google UULE location parameters and build local search URLs

    Converters

    Convert between different data formats

    10 tools

    JSON ↔ YAML ConverterConvert between JSON and YAML formatsNumber Base ConverterConvert numbers between binary, octal, decimal, and hexadecimalCase ConverterConvert text between camelCase, snake_case, UPPERCASE, and moreUnit ConverterConvert between different units of measurementJSON to CSV ConverterConvert JSON arrays to CSV format and vice versaXML ↔ JSON ConverterConvert between XML and JSON formatsUnix Timestamp ConverterConvert between Unix timestamps and human-readable datesColor Format ConverterConvert between HEX, RGB, HSL, and other color formatsImage to Base64Convert images to Base64 encoded stringsMarkdown to HTMLConvert Markdown syntax to HTML

    Hash & Crypto

    Generate hashes and cryptographic functions

    4 tools

    Hash GeneratorGenerate MD5, SHA-1, SHA-256, and SHA-512 hashesBcrypt GeneratorGenerate and verify bcrypt password hashesHMAC GeneratorGenerate HMAC signatures for message authenticationChecksum VerifierVerify file integrity with MD5, SHA-256 checksums

    Formatters

    Format and beautify code and data

    6 tools

    JSON FormatterFormat, beautify, and validate JSON dataSQL FormatterFormat and beautify SQL queriesHTML FormatterFormat and beautify HTML codeCSS FormatterFormat and beautify CSS stylesheetsJavaScript FormatterFormat and beautify JavaScript codeXML FormatterFormat and validate XML documents

    Utilities

    Helpful everyday tools and calculators

    8 tools

    Coin FlipFlip a virtual coin for heads or tailsDice RollerRoll virtual dice with customizable sides and quantitiesYes/No Decision MakerGet a random yes or no answerList RandomizerShuffle and randomize items in a listTeam GeneratorRandomly split people into teams or groupsCountdown TimerCreate countdown timers for events and deadlinesRegex TesterTest and debug regular expressions in real-timeCron Expression ParserParse and explain cron schedule expressions

    Calculators

    Financial, health, and everyday calculators

    9 tools

    EMI CalculatorCalculate Equated Monthly Installments for loans with interest ratesLoan CalculatorCalculate total loan amount, interest, and repayment schedulesSIP CalculatorCalculate returns on Systematic Investment Plans for mutual fundsMutual Fund CalculatorCalculate lump sum and SIP returns for mutual fund investmentsSalary CalculatorCalculate net salary, taxes, and deductions from gross incomeBMI CalculatorCalculate Body Mass Index and health category based on height and weightAge CalculatorCalculate exact age in years, months, and days from birth dateDate CalculatorCalculate difference between dates or add/subtract days from a datePercentage CalculatorCalculate percentages, percentage change, and percentage of numbers